Wear resistant insert for cast lightweighted pistons and method

Details Wear resistant insert for cast lightweighted pistons and method Wear resistant insert for cast lightweighted pistons and method

1983-05-26

1985-01-01

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164112, 164120, B22D 1908

Patent

active

044911688

ABSTRACT:
The wear resistant insert is an annular ring of austenitic iron alloy. It has a peripheral surface which conforms to the exterior of the piston into which it is to be cast. A plurality of frangible tabs project outward from the periphery. When casting a piston, the insert is supported on a ledge in a die cavity. A predetermined amount of aluminum alloy is poured into the die cavity and the cavity is closed by a punch. The punch applies a force on the solidifying alloy. As the aluminum alloy shrinks during solidification, the pressure severs the frangible tabs allowing the insert to shift.

REFERENCES:
patent: 3533329 (1970-10-01), Galli
patent: 4120081 (1978-10-01), Rosh et al.

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